Hi there. New to this kind of site so bear with me. Long story but after reading other sites I notice it helps to give as much info in first contact....story goes...bought house 7 years ago, didn't realise the boundary fence erected between me and the neighbour actually ran diagonally from the rear garden wall towards our houses (semi-detached by garage). Means the fence is well over a foot across the boundary of the extension the neighbour had built onto his garage several years ago. They informed us that that the fence they erected was on the original post and wire the builders left on completion of the estate. Trouble is it hid a gas flu/vent with cage which vented out onto our patio at one meter high. They told us that it was in line with planning regs at the time.....cannot understand why the previous owner allowed that one to slip by? Vent now removed. We believe the fence was re-erected to hide the vent. We asked permission to remove part of their fence running the length of the extension (which they gave us 3 or 4 years ago). Removed that part of the fence but leaves rest of fence jutting out 13 inches into our garden. Now we want to landscape our garden which means we have to alter our plans/structures to accomodate their fence on what we believe is our land and cut round things to fit round their fence posts. There is no extension planning application that we can find lodged with the local council?? The title deeds show a straight line dividing gardens and certainly not at an angle. I know they are drawn to scale and not decisive but trying to get some feedback before I employ a surveyor/solicitor. Fell out with them last year over their barking dog and them using our drive as their drive. It will never be 'good neighbours' again so cannot approach them as they are rather arrogant and think they can do what they want without permission. Hope you can help